./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3bc77f08e5fdc1758b216096ce0b18debc22015dafe53c78389dc7da36650394 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:45:53,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:45:53,562 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:45:53,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:45:53,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:45:53,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:45:53,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:45:53,605 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:45:53,606 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:45:53,608 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:45:53,608 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:45:53,608 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:45:53,609 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:45:53,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:45:53,611 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:45:53,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:45:53,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:45:53,612 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:45:53,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:45:53,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:45:53,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:45:53,617 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:45:53,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:45:53,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:45:53,618 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:45:53,619 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:45:53,619 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:45:53,619 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:45:53,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:45:53,620 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:45:53,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:45:53,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:45:53,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:45:53,622 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:45:53,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:45:53,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:45:53,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:45:53,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:45:53,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:45:53,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:45:53,623 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:45:53,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:45:53,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:45:53,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:45:53,624 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bc77f08e5fdc1758b216096ce0b18debc22015dafe53c78389dc7da36650394 [2024-10-13 16:45:53,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:45:53,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:45:53,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:45:53,905 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:45:53,905 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:45:53,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c [2024-10-13 16:45:55,295 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:45:55,526 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:45:55,526 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c [2024-10-13 16:45:55,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f5f07f5/4c3d4392626d4db7b16235178bd01b2c/FLAGb298d8d0e [2024-10-13 16:45:55,548 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f5f07f5/4c3d4392626d4db7b16235178bd01b2c [2024-10-13 16:45:55,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:45:55,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:45:55,553 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:45:55,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:45:55,559 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:45:55,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:45:55" (1/1) ... [2024-10-13 16:45:55,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fae14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:55, skipping insertion in model container [2024-10-13 16:45:55,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:45:55" (1/1) ... [2024-10-13 16:45:55,585 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:45:55,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:45:55,769 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:45:55,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:45:55,804 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:45:55,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:55 WrapperNode [2024-10-13 16:45:55,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:45:55,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:45:55,809 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:45:55,809 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:45:55,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:55" (1/1) ... [2024-10-13 16:45:55,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:55" (1/1) ... [2024-10-13 16:45:55,848 INFO L138 Inliner]: procedures = 21, calls = 16, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 171 [2024-10-13 16:45:55,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:45:55,849 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:45:55,849 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:45:55,849 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:45:55,859 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:55" (1/1) ... [2024-10-13 16:45:55,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:55" (1/1) ... [2024-10-13 16:45:55,861 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:55" (1/1) ... [2024-10-13 16:45:55,882 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 16:45:55,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:55" (1/1) ... [2024-10-13 16:45:55,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:55" (1/1) ... [2024-10-13 16:45:55,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:55" (1/1) ... [2024-10-13 16:45:55,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:55" (1/1) ... [2024-10-13 16:45:55,890 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:55" (1/1) ... [2024-10-13 16:45:55,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:55" (1/1) ... [2024-10-13 16:45:55,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:45:55,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:45:55,898 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:45:55,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:45:55,899 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:55" (1/1) ... [2024-10-13 16:45:55,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:45:55,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:55,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:45:55,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:45:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:45:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:45:55,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:45:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:45:55,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:45:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:45:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:45:55,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:45:55,979 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:45:56,061 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:45:56,062 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:45:56,376 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:45:56,376 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:45:56,630 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:45:56,630 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 16:45:56,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:45:56 BoogieIcfgContainer [2024-10-13 16:45:56,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:45:56,633 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:45:56,634 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:45:56,638 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:45:56,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:45:55" (1/3) ... [2024-10-13 16:45:56,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284c60a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:45:56, skipping insertion in model container [2024-10-13 16:45:56,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:55" (2/3) ... [2024-10-13 16:45:56,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284c60a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:45:56, skipping insertion in model container [2024-10-13 16:45:56,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:45:56" (3/3) ... [2024-10-13 16:45:56,642 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-symm.wvr.c [2024-10-13 16:45:56,658 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:45:56,659 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-13 16:45:56,659 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:45:56,770 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:45:56,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 72 transitions, 158 flow [2024-10-13 16:45:56,836 INFO L124 PetriNetUnfolderBase]: 12/70 cut-off events. [2024-10-13 16:45:56,837 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:45:56,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 70 events. 12/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 224 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-10-13 16:45:56,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 72 transitions, 158 flow [2024-10-13 16:45:56,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 68 transitions, 145 flow [2024-10-13 16:45:56,864 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:45:56,873 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7b29455c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:45:56,874 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-13 16:45:56,889 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:45:56,889 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2024-10-13 16:45:56,889 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:45:56,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:56,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:56,891 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:45:56,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:56,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1381454885, now seen corresponding path program 1 times [2024-10-13 16:45:56,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:56,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500802394] [2024-10-13 16:45:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:56,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:57,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:57,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500802394] [2024-10-13 16:45:57,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500802394] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:57,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:57,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:45:57,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402733812] [2024-10-13 16:45:57,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:57,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:57,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:57,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:57,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:57,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 72 [2024-10-13 16:45:57,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 68 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:57,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:57,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 72 [2024-10-13 16:45:57,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:57,633 INFO L124 PetriNetUnfolderBase]: 495/1052 cut-off events. [2024-10-13 16:45:57,633 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 16:45:57,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1838 conditions, 1052 events. 495/1052 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 7030 event pairs, 173 based on Foata normal form. 48/854 useless extension candidates. Maximal degree in co-relation 1769. Up to 374 conditions per place. [2024-10-13 16:45:57,647 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 41 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2024-10-13 16:45:57,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 80 transitions, 260 flow [2024-10-13 16:45:57,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:57,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-10-13 16:45:57,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-13 16:45:57,663 INFO L175 Difference]: Start difference. First operand has 63 places, 68 transitions, 145 flow. Second operand 4 states and 198 transitions. [2024-10-13 16:45:57,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 80 transitions, 260 flow [2024-10-13 16:45:57,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 254 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:45:57,672 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 142 flow [2024-10-13 16:45:57,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2024-10-13 16:45:57,681 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, -2 predicate places. [2024-10-13 16:45:57,682 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 142 flow [2024-10-13 16:45:57,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:57,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:57,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:57,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:45:57,683 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:45:57,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:57,685 INFO L85 PathProgramCache]: Analyzing trace with hash -124570925, now seen corresponding path program 1 times [2024-10-13 16:45:57,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:57,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111727704] [2024-10-13 16:45:57,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:57,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:57,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:57,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111727704] [2024-10-13 16:45:57,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111727704] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:57,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:57,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:45:57,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666380834] [2024-10-13 16:45:57,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:57,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:57,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:57,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:57,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:57,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 72 [2024-10-13 16:45:57,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:57,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:57,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 72 [2024-10-13 16:45:57,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:58,001 INFO L124 PetriNetUnfolderBase]: 417/948 cut-off events. [2024-10-13 16:45:58,001 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-10-13 16:45:58,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 948 events. 417/948 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6388 event pairs, 169 based on Foata normal form. 0/773 useless extension candidates. Maximal degree in co-relation 998. Up to 374 conditions per place. [2024-10-13 16:45:58,007 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 39 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-10-13 16:45:58,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 254 flow [2024-10-13 16:45:58,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:58,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:58,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-10-13 16:45:58,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6909722222222222 [2024-10-13 16:45:58,010 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 142 flow. Second operand 4 states and 199 transitions. [2024-10-13 16:45:58,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 254 flow [2024-10-13 16:45:58,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:45:58,013 INFO L231 Difference]: Finished difference. Result has 60 places, 65 transitions, 140 flow [2024-10-13 16:45:58,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=60, PETRI_TRANSITIONS=65} [2024-10-13 16:45:58,014 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2024-10-13 16:45:58,014 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 65 transitions, 140 flow [2024-10-13 16:45:58,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:58,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:58,015 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:58,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:45:58,015 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:45:58,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:58,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1226708596, now seen corresponding path program 1 times [2024-10-13 16:45:58,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:58,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098143754] [2024-10-13 16:45:58,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:58,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:58,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:58,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098143754] [2024-10-13 16:45:58,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098143754] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:58,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:58,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:45:58,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324980335] [2024-10-13 16:45:58,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:58,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:58,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:58,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:58,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:58,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 72 [2024-10-13 16:45:58,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:58,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:58,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 72 [2024-10-13 16:45:58,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:58,281 INFO L124 PetriNetUnfolderBase]: 522/1057 cut-off events. [2024-10-13 16:45:58,282 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-10-13 16:45:58,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1895 conditions, 1057 events. 522/1057 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6829 event pairs, 188 based on Foata normal form. 46/907 useless extension candidates. Maximal degree in co-relation 930. Up to 412 conditions per place. [2024-10-13 16:45:58,291 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 40 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-10-13 16:45:58,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 76 transitions, 253 flow [2024-10-13 16:45:58,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:58,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-10-13 16:45:58,295 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6840277777777778 [2024-10-13 16:45:58,297 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 140 flow. Second operand 4 states and 197 transitions. [2024-10-13 16:45:58,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 76 transitions, 253 flow [2024-10-13 16:45:58,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 76 transitions, 243 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:45:58,299 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 136 flow [2024-10-13 16:45:58,299 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2024-10-13 16:45:58,300 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2024-10-13 16:45:58,300 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 136 flow [2024-10-13 16:45:58,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:58,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:58,302 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:58,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:45:58,303 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:45:58,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:58,304 INFO L85 PathProgramCache]: Analyzing trace with hash 545458613, now seen corresponding path program 1 times [2024-10-13 16:45:58,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:58,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152179457] [2024-10-13 16:45:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:58,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:58,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:58,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152179457] [2024-10-13 16:45:58,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152179457] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:58,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:58,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:58,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123165196] [2024-10-13 16:45:58,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:58,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:45:58,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:58,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:45:58,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:45:58,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 72 [2024-10-13 16:45:58,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:58,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:58,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 72 [2024-10-13 16:45:58,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:58,696 INFO L124 PetriNetUnfolderBase]: 604/1141 cut-off events. [2024-10-13 16:45:58,696 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-10-13 16:45:58,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2156 conditions, 1141 events. 604/1141 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7314 event pairs, 169 based on Foata normal form. 0/962 useless extension candidates. Maximal degree in co-relation 1466. Up to 374 conditions per place. [2024-10-13 16:45:58,705 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 56 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2024-10-13 16:45:58,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 91 transitions, 326 flow [2024-10-13 16:45:58,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:45:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:45:58,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 247 transitions. [2024-10-13 16:45:58,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6861111111111111 [2024-10-13 16:45:58,707 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 136 flow. Second operand 5 states and 247 transitions. [2024-10-13 16:45:58,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 91 transitions, 326 flow [2024-10-13 16:45:58,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 91 transitions, 312 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:45:58,712 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 145 flow [2024-10-13 16:45:58,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=59, PETRI_TRANSITIONS=63} [2024-10-13 16:45:58,713 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, -4 predicate places. [2024-10-13 16:45:58,713 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 145 flow [2024-10-13 16:45:58,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:58,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:58,714 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:58,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:45:58,714 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:45:58,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:58,715 INFO L85 PathProgramCache]: Analyzing trace with hash 545459638, now seen corresponding path program 1 times [2024-10-13 16:45:58,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:58,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413038086] [2024-10-13 16:45:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:58,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:58,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:58,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413038086] [2024-10-13 16:45:58,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413038086] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:58,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:58,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:58,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856773158] [2024-10-13 16:45:58,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:58,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:58,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:58,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:58,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:58,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-10-13 16:45:58,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:58,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:58,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-10-13 16:45:58,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:59,003 INFO L124 PetriNetUnfolderBase]: 666/1376 cut-off events. [2024-10-13 16:45:59,003 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-10-13 16:45:59,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2603 conditions, 1376 events. 666/1376 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9349 event pairs, 293 based on Foata normal form. 0/1172 useless extension candidates. Maximal degree in co-relation 1206. Up to 645 conditions per place. [2024-10-13 16:45:59,013 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 58 selfloop transitions, 5 changer transitions 0/94 dead transitions. [2024-10-13 16:45:59,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 94 transitions, 339 flow [2024-10-13 16:45:59,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 208 transitions. [2024-10-13 16:45:59,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-10-13 16:45:59,016 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 145 flow. Second operand 4 states and 208 transitions. [2024-10-13 16:45:59,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 94 transitions, 339 flow [2024-10-13 16:45:59,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 94 transitions, 330 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:45:59,019 INFO L231 Difference]: Finished difference. Result has 61 places, 65 transitions, 165 flow [2024-10-13 16:45:59,019 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=61, PETRI_TRANSITIONS=65} [2024-10-13 16:45:59,020 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, -2 predicate places. [2024-10-13 16:45:59,020 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 65 transitions, 165 flow [2024-10-13 16:45:59,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:59,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:59,021 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:59,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:45:59,021 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:45:59,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash 626739819, now seen corresponding path program 1 times [2024-10-13 16:45:59,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:59,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057657788] [2024-10-13 16:45:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:59,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:59,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:59,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:59,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057657788] [2024-10-13 16:45:59,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057657788] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:59,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:59,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:45:59,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311407673] [2024-10-13 16:45:59,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:59,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:59,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:59,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:59,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:59,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 72 [2024-10-13 16:45:59,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 65 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:59,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:59,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 72 [2024-10-13 16:45:59,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:59,266 INFO L124 PetriNetUnfolderBase]: 533/1208 cut-off events. [2024-10-13 16:45:59,266 INFO L125 PetriNetUnfolderBase]: For 333/357 co-relation queries the response was YES. [2024-10-13 16:45:59,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 1208 events. 533/1208 cut-off events. For 333/357 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8386 event pairs, 225 based on Foata normal form. 18/1042 useless extension candidates. Maximal degree in co-relation 1523. Up to 496 conditions per place. [2024-10-13 16:45:59,275 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 44 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2024-10-13 16:45:59,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 314 flow [2024-10-13 16:45:59,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:59,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-10-13 16:45:59,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-13 16:45:59,277 INFO L175 Difference]: Start difference. First operand has 61 places, 65 transitions, 165 flow. Second operand 4 states and 198 transitions. [2024-10-13 16:45:59,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 314 flow [2024-10-13 16:45:59,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 80 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:45:59,281 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 166 flow [2024-10-13 16:45:59,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-10-13 16:45:59,283 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2024-10-13 16:45:59,283 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 166 flow [2024-10-13 16:45:59,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:59,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:59,284 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:59,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:45:59,285 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:45:59,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:59,285 INFO L85 PathProgramCache]: Analyzing trace with hash -270651572, now seen corresponding path program 1 times [2024-10-13 16:45:59,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:59,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371967048] [2024-10-13 16:45:59,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:59,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:59,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:59,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371967048] [2024-10-13 16:45:59,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371967048] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:59,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:59,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:45:59,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740119417] [2024-10-13 16:45:59,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:59,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:45:59,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:59,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:45:59,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:45:59,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-10-13 16:45:59,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:59,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:59,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-10-13 16:45:59,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:59,679 INFO L124 PetriNetUnfolderBase]: 784/1454 cut-off events. [2024-10-13 16:45:59,679 INFO L125 PetriNetUnfolderBase]: For 385/387 co-relation queries the response was YES. [2024-10-13 16:45:59,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3100 conditions, 1454 events. 784/1454 cut-off events. For 385/387 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9417 event pairs, 167 based on Foata normal form. 50/1368 useless extension candidates. Maximal degree in co-relation 2335. Up to 398 conditions per place. [2024-10-13 16:45:59,689 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 68 selfloop transitions, 9 changer transitions 0/106 dead transitions. [2024-10-13 16:45:59,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 106 transitions, 422 flow [2024-10-13 16:45:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:45:59,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:45:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 279 transitions. [2024-10-13 16:45:59,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-10-13 16:45:59,691 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 166 flow. Second operand 6 states and 279 transitions. [2024-10-13 16:45:59,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 106 transitions, 422 flow [2024-10-13 16:45:59,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 106 transitions, 404 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:45:59,694 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 185 flow [2024-10-13 16:45:59,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-10-13 16:45:59,695 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 1 predicate places. [2024-10-13 16:45:59,695 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 185 flow [2024-10-13 16:45:59,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 6 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:59,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:59,696 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:59,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:45:59,696 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:45:59,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:59,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1147053563, now seen corresponding path program 1 times [2024-10-13 16:45:59,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:59,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593462452] [2024-10-13 16:45:59,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:59,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:59,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:59,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593462452] [2024-10-13 16:45:59,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593462452] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:59,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:59,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:59,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105077450] [2024-10-13 16:45:59,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:59,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:59,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:59,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:59,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:59,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-10-13 16:45:59,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:59,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:59,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-10-13 16:45:59,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:59,963 INFO L124 PetriNetUnfolderBase]: 779/1421 cut-off events. [2024-10-13 16:45:59,964 INFO L125 PetriNetUnfolderBase]: For 990/1010 co-relation queries the response was YES. [2024-10-13 16:45:59,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3274 conditions, 1421 events. 779/1421 cut-off events. For 990/1010 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9030 event pairs, 287 based on Foata normal form. 44/1298 useless extension candidates. Maximal degree in co-relation 1832. Up to 657 conditions per place. [2024-10-13 16:45:59,974 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 58 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2024-10-13 16:45:59,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 92 transitions, 372 flow [2024-10-13 16:45:59,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:59,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 205 transitions. [2024-10-13 16:45:59,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7118055555555556 [2024-10-13 16:45:59,976 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 185 flow. Second operand 4 states and 205 transitions. [2024-10-13 16:45:59,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 92 transitions, 372 flow [2024-10-13 16:45:59,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 92 transitions, 358 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:45:59,980 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 186 flow [2024-10-13 16:45:59,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2024-10-13 16:45:59,982 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2024-10-13 16:45:59,982 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 186 flow [2024-10-13 16:45:59,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:59,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:59,983 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:59,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:45:59,984 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:45:59,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:59,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1000579886, now seen corresponding path program 1 times [2024-10-13 16:45:59,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:59,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185836366] [2024-10-13 16:45:59,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:59,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:46:00,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:00,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185836366] [2024-10-13 16:46:00,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185836366] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:46:00,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:46:00,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:46:00,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564289389] [2024-10-13 16:46:00,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:46:00,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:46:00,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:00,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:46:00,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:46:00,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-10-13 16:46:00,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:00,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:00,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-10-13 16:46:00,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:00,292 INFO L124 PetriNetUnfolderBase]: 890/1862 cut-off events. [2024-10-13 16:46:00,292 INFO L125 PetriNetUnfolderBase]: For 1333/1409 co-relation queries the response was YES. [2024-10-13 16:46:00,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 1862 events. 890/1862 cut-off events. For 1333/1409 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 13257 event pairs, 408 based on Foata normal form. 76/1667 useless extension candidates. Maximal degree in co-relation 3034. Up to 874 conditions per place. [2024-10-13 16:46:00,305 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 71 selfloop transitions, 5 changer transitions 0/104 dead transitions. [2024-10-13 16:46:00,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 104 transitions, 510 flow [2024-10-13 16:46:00,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:46:00,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:46:00,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 206 transitions. [2024-10-13 16:46:00,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7152777777777778 [2024-10-13 16:46:00,307 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 186 flow. Second operand 4 states and 206 transitions. [2024-10-13 16:46:00,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 104 transitions, 510 flow [2024-10-13 16:46:00,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 104 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:46:00,312 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 209 flow [2024-10-13 16:46:00,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-10-13 16:46:00,312 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2024-10-13 16:46:00,313 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 209 flow [2024-10-13 16:46:00,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:00,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:00,313 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:00,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 16:46:00,314 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:46:00,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:00,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1000578861, now seen corresponding path program 1 times [2024-10-13 16:46:00,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:00,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36353325] [2024-10-13 16:46:00,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:00,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:46:00,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:00,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36353325] [2024-10-13 16:46:00,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36353325] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:46:00,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:46:00,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:46:00,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464398073] [2024-10-13 16:46:00,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:46:00,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:46:00,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:00,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:46:00,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:46:00,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 72 [2024-10-13 16:46:00,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:00,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:00,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 72 [2024-10-13 16:46:00,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:00,680 INFO L124 PetriNetUnfolderBase]: 1037/1941 cut-off events. [2024-10-13 16:46:00,681 INFO L125 PetriNetUnfolderBase]: For 1563/1659 co-relation queries the response was YES. [2024-10-13 16:46:00,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 1941 events. 1037/1941 cut-off events. For 1563/1659 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12935 event pairs, 244 based on Foata normal form. 96/1895 useless extension candidates. Maximal degree in co-relation 3558. Up to 760 conditions per place. [2024-10-13 16:46:00,694 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 70 selfloop transitions, 6 changer transitions 0/102 dead transitions. [2024-10-13 16:46:00,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 102 transitions, 517 flow [2024-10-13 16:46:00,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:46:00,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:46:00,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 245 transitions. [2024-10-13 16:46:00,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6805555555555556 [2024-10-13 16:46:00,696 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 209 flow. Second operand 5 states and 245 transitions. [2024-10-13 16:46:00,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 102 transitions, 517 flow [2024-10-13 16:46:00,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 102 transitions, 514 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:46:00,701 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 223 flow [2024-10-13 16:46:00,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2024-10-13 16:46:00,702 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 7 predicate places. [2024-10-13 16:46:00,702 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 223 flow [2024-10-13 16:46:00,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:00,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:00,703 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:00,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:46:00,703 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:46:00,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:00,704 INFO L85 PathProgramCache]: Analyzing trace with hash 953174259, now seen corresponding path program 1 times [2024-10-13 16:46:00,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:00,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600911825] [2024-10-13 16:46:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:00,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:46:00,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:00,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600911825] [2024-10-13 16:46:00,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600911825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:46:00,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:46:00,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:46:00,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222445778] [2024-10-13 16:46:00,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:46:00,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:46:00,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:00,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:46:00,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:46:00,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-10-13 16:46:00,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:00,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:00,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-10-13 16:46:00,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:01,124 INFO L124 PetriNetUnfolderBase]: 1037/1912 cut-off events. [2024-10-13 16:46:01,124 INFO L125 PetriNetUnfolderBase]: For 1911/2007 co-relation queries the response was YES. [2024-10-13 16:46:01,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4898 conditions, 1912 events. 1037/1912 cut-off events. For 1911/2007 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 12559 event pairs, 244 based on Foata normal form. 154/1924 useless extension candidates. Maximal degree in co-relation 3709. Up to 561 conditions per place. [2024-10-13 16:46:01,138 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 85 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2024-10-13 16:46:01,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 120 transitions, 645 flow [2024-10-13 16:46:01,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:46:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:46:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 276 transitions. [2024-10-13 16:46:01,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-10-13 16:46:01,141 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 223 flow. Second operand 6 states and 276 transitions. [2024-10-13 16:46:01,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 120 transitions, 645 flow [2024-10-13 16:46:01,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 120 transitions, 636 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:46:01,147 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 239 flow [2024-10-13 16:46:01,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2024-10-13 16:46:01,148 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2024-10-13 16:46:01,148 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 239 flow [2024-10-13 16:46:01,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:01,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:01,149 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:01,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:46:01,149 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-13 16:46:01,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:01,150 INFO L85 PathProgramCache]: Analyzing trace with hash 430948691, now seen corresponding path program 1 times [2024-10-13 16:46:01,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:01,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044663130] [2024-10-13 16:46:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:01,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:46:01,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:01,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044663130] [2024-10-13 16:46:01,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044663130] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:46:01,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:46:01,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:46:01,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412096339] [2024-10-13 16:46:01,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:46:01,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:46:01,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:01,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:46:01,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:46:01,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-10-13 16:46:01,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:01,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:01,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-10-13 16:46:01,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:01,536 INFO L124 PetriNetUnfolderBase]: 1008/1808 cut-off events. [2024-10-13 16:46:01,537 INFO L125 PetriNetUnfolderBase]: For 1927/2021 co-relation queries the response was YES. [2024-10-13 16:46:01,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4944 conditions, 1808 events. 1008/1808 cut-off events. For 1927/2021 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 11636 event pairs, 408 based on Foata normal form. 123/1841 useless extension candidates. Maximal degree in co-relation 3740. Up to 903 conditions per place. [2024-10-13 16:46:01,546 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 0 selfloop transitions, 0 changer transitions 138/138 dead transitions. [2024-10-13 16:46:01,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 138 transitions, 775 flow [2024-10-13 16:46:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:46:01,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:46:01,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 294 transitions. [2024-10-13 16:46:01,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6805555555555556 [2024-10-13 16:46:01,548 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 239 flow. Second operand 6 states and 294 transitions. [2024-10-13 16:46:01,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 138 transitions, 775 flow [2024-10-13 16:46:01,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 138 transitions, 757 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-13 16:46:01,558 INFO L231 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2024-10-13 16:46:01,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2024-10-13 16:46:01,560 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 8 predicate places. [2024-10-13 16:46:01,560 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2024-10-13 16:46:01,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:01,563 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 26 remaining) [2024-10-13 16:46:01,564 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2024-10-13 16:46:01,564 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2024-10-13 16:46:01,564 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2024-10-13 16:46:01,564 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2024-10-13 16:46:01,565 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2024-10-13 16:46:01,565 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2024-10-13 16:46:01,565 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2024-10-13 16:46:01,566 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2024-10-13 16:46:01,566 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2024-10-13 16:46:01,566 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2024-10-13 16:46:01,566 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2024-10-13 16:46:01,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 26 remaining) [2024-10-13 16:46:01,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2024-10-13 16:46:01,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2024-10-13 16:46:01,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2024-10-13 16:46:01,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2024-10-13 16:46:01,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2024-10-13 16:46:01,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2024-10-13 16:46:01,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2024-10-13 16:46:01,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2024-10-13 16:46:01,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2024-10-13 16:46:01,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2024-10-13 16:46:01,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2024-10-13 16:46:01,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2024-10-13 16:46:01,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2024-10-13 16:46:01,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 16:46:01,571 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:01,576 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 16:46:01,579 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 16:46:01,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 04:46:01 BasicIcfg [2024-10-13 16:46:01,585 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 16:46:01,585 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 16:46:01,585 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 16:46:01,585 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 16:46:01,586 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:45:56" (3/4) ... [2024-10-13 16:46:01,588 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 16:46:01,590 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-13 16:46:01,590 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-13 16:46:01,595 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 77 nodes and edges [2024-10-13 16:46:01,596 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-10-13 16:46:01,596 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-13 16:46:01,596 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-13 16:46:01,682 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 16:46:01,684 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 16:46:01,684 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 16:46:01,685 INFO L158 Benchmark]: Toolchain (without parser) took 6133.33ms. Allocated memory was 146.8MB in the beginning and 283.1MB in the end (delta: 136.3MB). Free memory was 116.1MB in the beginning and 110.1MB in the end (delta: 6.1MB). Peak memory consumption was 145.5MB. Max. memory is 16.1GB. [2024-10-13 16:46:01,685 INFO L158 Benchmark]: CDTParser took 1.01ms. Allocated memory is still 146.8MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:46:01,685 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.94ms. Allocated memory is still 146.8MB. Free memory was 115.6MB in the beginning and 102.9MB in the end (delta: 12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-13 16:46:01,685 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.04ms. Allocated memory is still 146.8MB. Free memory was 102.9MB in the beginning and 100.5MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 16:46:01,686 INFO L158 Benchmark]: Boogie Preprocessor took 48.32ms. Allocated memory is still 146.8MB. Free memory was 100.5MB in the beginning and 98.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:46:01,686 INFO L158 Benchmark]: RCFGBuilder took 733.08ms. Allocated memory is still 146.8MB. Free memory was 98.4MB in the beginning and 49.7MB in the end (delta: 48.7MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-10-13 16:46:01,687 INFO L158 Benchmark]: TraceAbstraction took 4951.45ms. Allocated memory was 146.8MB in the beginning and 283.1MB in the end (delta: 136.3MB). Free memory was 49.2MB in the beginning and 115.3MB in the end (delta: -66.1MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. [2024-10-13 16:46:01,687 INFO L158 Benchmark]: Witness Printer took 99.39ms. Allocated memory is still 283.1MB. Free memory was 115.3MB in the beginning and 110.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-13 16:46:01,689 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.01ms. Allocated memory is still 146.8MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.94ms. Allocated memory is still 146.8MB. Free memory was 115.6MB in the beginning and 102.9MB in the end (delta: 12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.04ms. Allocated memory is still 146.8MB. Free memory was 102.9MB in the beginning and 100.5MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.32ms. Allocated memory is still 146.8MB. Free memory was 100.5MB in the beginning and 98.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 733.08ms. Allocated memory is still 146.8MB. Free memory was 98.4MB in the beginning and 49.7MB in the end (delta: 48.7MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * TraceAbstraction took 4951.45ms. Allocated memory was 146.8MB in the beginning and 283.1MB in the end (delta: 136.3MB). Free memory was 49.2MB in the beginning and 115.3MB in the end (delta: -66.1MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. * Witness Printer took 99.39ms. Allocated memory is still 283.1MB. Free memory was 115.3MB in the beginning and 110.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 115 locations, 26 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 936 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 782 mSDsluCounter, 93 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 61 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1674 IncrementalHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 32 mSDtfsCounter, 1674 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=11, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 16:46:01,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE